JP2002185342A - Card type radio communication equipment and radio communication system using the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide card type radio communication equipment capable of reducing power consumption and a radio communication system using this card type radio communication equipment. SOLUTION: A first control means 31 controls a first switch means 33 to independently turn on/off the power sources of a transmission circuit 17, a base band signal processing circuit 21, and an interface circuit 22 based on a plurality of different detection signals corresponding to a reception high frequency signal level from a reception signal level detecting means 30 and the contents of a first storage means 32. A second control means 34 controls a second switch means 36 to independently turn on/off the power sources of amplifiers 13a and 13b based on the detection signals and the contents of a second storage means 35, and controls a third switch means 37 to release the amplifier whose power source is turned on and to short-circuit the amplifier whose power source is turned off.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a frequency hopping (Frequency Hoppin) which is connected to an information terminal device such as a personal computer and uses a spread spectrum technique.
g) A card-type wireless communication device having a wireless communication function using the method and a wireless communication system using the same.

[0002]

2. Description of the Related Art Generally, in communication using spread spectrum technology, a modulated signal obtained by modulating an input baseband signal such as voice on a transmitting side is spread spectrum using a spreading code, and then a high frequency signal is transmitted. Is transmitted to the communication partner. On the receiving side, the spread spectrum signal received from the communication partner is demodulated (despread) using the same spreading code as that on the transmitting side.

[0003] Communication systems using spread spectrum technology include Direct Spread (Direct Spread).
d) There is a method and a frequency hopping method. In the direct spreading method, spreading is performed while multiplying a narrow band modulated wave by a spreading code, and a certain continuous frequency band is used uniformly. On the other hand, the frequency hopping method spreads a signal within a frequency band by randomly switching the frequency of a carrier wave at the time of performing communication with a communication partner using a spreading code. For example, Bluetooth (Bluetooth)
Etc.

FIG. 7 is a block circuit diagram showing a schematic configuration of a conventional card-type wireless communication device. The conventional card-type wireless communication device 50 of FIG. 7 has the following circuit configuration.
The antenna 51 is connected to the receiving circuit section 52 and the transmitting circuit section 57.

[0005] The receiving circuit section 52 comprises an amplifier 53, a mixer circuit 54 and a demodulation circuit 55. The antenna 51 is connected to a baseband signal processing circuit section 61 via the amplifier 53, the mixer circuit 54 and the demodulation circuit 55. ing. The transmission circuit unit 57 includes a modulation circuit 60, a mixer circuit 59
The baseband signal processing circuit section 61 is connected to the antenna 51 via the modulation circuit 60, the mixer circuit 59, and the amplifier 58. A local oscillator 56 is connected to the mixer circuits 54 and 59.

The baseband signal processing circuit 61
Is connected to the connector 6 via the interface circuit unit 62.
5 and a receiving circuit 52, a transmitting circuit 5
A circuit control unit 63 is connected to each of the baseband signal processing circuit unit 7 and the baseband signal processing circuit unit 61. The power supply unit 6
4 is connected to the connector 65 and each of the circuits of the card-type wireless communication device 50 described above.

Next, the operation of the conventional card type radio communication device 50 shown in FIG. 7 will be described. On the receiving side, the spread spectrum signal (for example, 2.4 GHz band) received from the communication partner side by the antenna 51 is amplified by the amplifier 53 and applied to the mixer circuit 54. The received high-frequency signal is demodulated into a baseband signal by a mixer circuit 54 and a demodulation circuit 55, and the baseband signal processing circuit unit 6
1, necessary signal processing is performed, and output to an information terminal device such as a personal computer (not shown) from the connector 65 via the interface circuit unit 62.

On the transmitting side, a data input signal input from an information terminal device such as a personal computer (not shown) via a connector 65 and an interface circuit unit 62 is subjected to necessary signal processing by a baseband signal processing circuit unit 61. The modulation circuit 60 and the mixer circuit 59
Spread spectrum signal (for example, 2.4 GHz)
After the spectrum is spread to the band, the signal is amplified by the amplifier 58 and transmitted from the antenna 51 to the communication partner side.

The circuit control unit 63 controls the operations of the reception circuit unit 52, the transmission circuit unit 57, and the baseband signal processing circuit unit 61, and the power supply unit 64 includes an information terminal device such as a personal computer (not shown). From the connector 65, the power supply + B is supplied to the respective circuits inside the card-type wireless communication device 50.

The local oscillator 56 includes mixer circuits 54 and 59
Generate a frequency signal (for example, 2.4 GHz) necessary for operation.

[0011]

However, in the above-mentioned prior art, power is supplied to the power supply unit 64 of the card-type wireless communication device 50 from an information terminal device such as a personal computer (not shown) via the connector 65. Therefore, when an information terminal device such as a personal computer uses a commercial power supply, no particular problem occurs.

However, when an information terminal device such as a personal computer is carried and used, the information terminal device such as a personal computer operates using a battery built in its main body as a power source. Power is supplied to the power supply unit 64 via a connector 65 from a battery built in the main body of the information terminal device such as a personal computer. Therefore, as the power consumed by the card-type wireless communication device 50 increases, the battery built in the main body of the information terminal device such as a personal computer quickly depletes, and the time that the information terminal device such as a personal computer can be carried and used. Has been shortened.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-described problem, and independently supplies power to each circuit unit constituting a card-type wireless communication device according to the level of a received high-frequency signal. It is an object of the present invention to provide a card-type wireless communication device that achieves low power consumption by performing on / off control and a wireless communication system using the same.

[0014]

In order to solve the above problems, the present invention is directed to an information terminal device, comprising: an antenna;
A receiving circuit unit for frequency-converting and demodulating a high-frequency signal received from the antenna and outputting a baseband reception signal;
A transmission circuit unit that modulates and frequency-converts the input baseband transmission signal and outputs a high-frequency signal to the antenna,
A baseband signal processing circuit unit that performs signal processing of the baseband transmission signal and the baseband reception signal, an interface circuit unit having an interface function between the information terminal devices, and a power supply unit that supplies power to the circuit units. A card-type wireless communication device including a connector connected to the information terminal device, a reception signal level detection unit that outputs a plurality of different detection signals according to a level of a high-frequency signal received from the antenna, and the power supply unit First switch means for independently turning on / off the power supply to three circuit units of the transmission circuit unit, the baseband signal processing circuit unit, and the interface circuit unit for each of the three circuit units; A circuit part for turning on the power and a circuit part for turning off the power among the three circuit parts corresponding to the respective signals The first switch means is controlled to turn on / off the power of the three circuit units based on the stored first storage means and the plurality of different detection signals and the contents stored in the first storage means. And a first control means.

Further, according to the present invention, in the above card-type wireless communication device, the receiving circuit unit includes a plurality of amplifiers connected in series to amplify the received high-frequency signal, and A second switch for turning on / off the power supply to the amplifier independently for each of the amplifiers; a third switch for short-circuiting or opening each of the amplifiers independently for each of the amplifiers; A second memory storing an amplifier for turning on the power and an amplifier for turning off the power among the amplifiers corresponding to the respective detection signals.
And controlling the second switch means to turn on / off the power of each of the amplifiers based on the plurality of different detection signals and the contents stored in the second storage means, and turning on the power. And second control means for controlling the third switch means so as to open the amplifier and short-circuit the powered-off amplifier.

According to the present invention, in the above card-type radio communication apparatus, the reception signal level detection means includes a first detection signal, a second detection signal, A third detection signal and a fourth detection signal are output, and the first storage unit stores the transmission circuit unit, the baseband signal processing circuit unit, and the interface circuit unit corresponding to the first detection signal. Are turned on, and in response to the second detection signal, the power supply of the transmission circuit unit is turned off, the power supplies of the baseband signal processing circuit unit and the interface circuit unit are turned on, and the third detection signal In response to the fourth detection signal, the power supply of the transmission circuit unit and the baseband signal processing circuit unit is turned off, and the power supply of the interface circuit unit is turned on. All the power of the baseband signal processing circuit and the interface circuit is characterized in that it is stored to be turned off.

Further, according to the present invention, in the above card-type radio communication apparatus, the frequency band of the high-frequency signal transmitted and received from the antenna is in the 2.4 GHz band, and the frequency hopping method using the spread spectrum technique is used. It is characterized by having.

The present invention also provides an information terminal device, an antenna connected to the information terminal device, an antenna, and a receiving circuit for frequency-converting and demodulating a high-frequency signal received from the antenna and outputting a baseband reception signal. A transmission circuit unit that modulates and frequency-converts the input baseband transmission signal and outputs a high-frequency signal to the antenna; a baseband signal processing circuit unit that performs signal processing on the baseband transmission signal and the baseband reception signal; A wireless communication system including a card-type wireless communication device including an interface circuit unit having an interface function between information terminal devices, a power supply unit for supplying power to the respective circuit units, and a connector connected to the information terminal device In the card-type wireless communication device, according to the level of the high-frequency signal received from the antenna Receiving signal level detecting means for outputting a plurality of different detection signals; and supplying power from the power supply unit to the three circuit units of the transmission circuit unit, the baseband signal processing circuit unit, and the interface circuit unit for each of the three circuit units. And a first switch means for turning on and off independently of each other, wherein the information terminal device is configured to turn on and off the power among the three circuit portions in accordance with the plurality of different detection signals, respectively. A first storage unit storing a first unit, and a first switch unit configured to turn on and off a power supply of the three circuit units based on the plurality of different detection signals and contents stored in the first storage unit. And a first control means for controlling.

Further, according to the present invention, in the above wireless communication system, the card-type wireless communication device includes a plurality of amplifiers connected in series to the receiving circuit unit for amplifying the received high-frequency signal, Second switch means for independently turning on / off the power supply from the power supply unit to each of the amplifiers, and third switch means for short-circuiting or opening each of the amplifiers independently for each of the amplifiers Wherein the information terminal device stores a second power-on amplifier and a second power-off amplifier corresponding to each of the plurality of different detection signals.
And controlling the second switch means to turn on / off the power of each of the amplifiers based on the plurality of different detection signals and the contents stored in the second storage means, and turning on the power. And second control means for controlling the third switch means so as to open the amplifier and short-circuit the powered-off amplifier.

Further, according to the present invention, in the above radio communication system, the reception signal level detection means includes a first detection signal, a second detection signal, and a third detection signal in order of a reception signal level from a strong level to a weak level. And a fourth detection signal, and the first storage means stores a power supply of the transmission circuit section, the baseband signal processing circuit section, and the interface circuit section corresponding to the first detection signal. Are turned on, and the power of the transmitting circuit unit is turned off, and the powers of the baseband signal processing circuit unit and the interface circuit unit are turned on in response to the second detection signal. Then, the power supply of the transmission circuit unit and the baseband signal processing circuit unit is turned off, the power supply of the interface circuit unit is turned on, and the transmission circuit unit and the base unit are turned on in response to the fourth detection signal. All the power of the command signal processing circuit and the interface circuit is characterized in that it is stored to be turned off.

According to the present invention, in the above wireless communication system, a frequency band of a high frequency signal transmitted and received from the antenna is a 2.4 GHz band, and a frequency hopping method using a spread spectrum technique is used. It is characterized by the following.

[0022]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 is a block circuit diagram showing a schematic configuration of the card type wireless communication device of the present embodiment. The card-type wireless communication device 1 of the present embodiment in FIG. 1 has the following circuit configuration. The antenna 11 is connected to the receiving circuit unit 12 and the transmitting circuit unit 17.

The receiving circuit unit 12 includes a plurality of amplifiers 13a, 13b, 13c connected in series, a mixer circuit 14, and a demodulation circuit 15. The antenna 11 includes an amplifier 13a,
13b, 13c, the mixer circuit 14, and the demodulation circuit 15 are connected to the baseband signal processing circuit section 21. The transmission circuit unit 17 includes a modulation circuit 20, a mixer circuit 19, and an amplifier 18. The baseband signal processing circuit unit 21 is connected to the antenna 11 via the modulation circuit 20, the mixer circuit 19, and the amplifier 18. I have. The local oscillator 16 is connected to the mixer circuits 14 and 19.

The baseband signal processing circuit 21
Is connected to the connector 2 via the interface circuit unit 22.
5 and the receiving circuit unit 12 and the transmitting circuit unit 1
7 and the baseband signal processing circuit unit 21, a circuit control unit 23 is connected.

The power supply unit 24 is connected to the connector 25, and via the switch circuits 33a, 33b and 33c of the first switch means 33, the transmission circuit unit 17 and the baseband signal processing circuit unit 21 And a switch circuit 3 of the second switch means 36, which is connected to each of the three circuit sections of the interface circuit section 22.
6a and 36b, the amplifiers 13a and 13b
b. And the power supply unit
And the other circuits of the card-type wireless communication device 1
Connected directly.

The amplifiers 13a and 13b are connected to the switch circuits 37a and 37
7b are connected.

The output of the demodulation circuit 15 is connected to the received signal level detecting means 30, and the output of the received signal level detecting means 30 is connected to the first switch means 33 via the first control means 31. And connected to a second switch means 36 and a third switch means 37 via a second control means 34.

The first control means 31 is connected to the first storage means 32, and the second control means 34 is connected to the second storage means 35.

Next, the operation of the card-type wireless communication device 1 of this embodiment shown in FIG. 1 will be described. On the receiving side, the spread spectrum signal (for example, 2.4 GHz band) received from the communication partner side by the antenna 11 is transmitted to the amplifiers 13a and 13a.
The signals are amplified by 3b and 13c and applied to the mixer circuit 14. The received high-frequency signal is demodulated into a baseband signal by a mixer circuit 14 and a demodulation circuit 15, and necessary signal processing is performed by a baseband signal processing circuit section 21.
5 to an information terminal device such as a personal computer (not shown).

On the transmitting side, a data input signal input from an information terminal device such as a personal computer (not shown) via the connector 25 and the interface circuit unit 22 is subjected to necessary signal processing by the baseband signal processing circuit unit 21. The modulation circuit 20 and the mixer circuit 19
Spread spectrum signal (for example, 2.4 GHz)
After being spread spectrum, the signal is amplified by the amplifier 18 and transmitted from the antenna 11 to the communication partner.

The circuit control unit 23 controls the operations of the reception circuit unit 12, the transmission circuit unit 17, and the baseband signal processing circuit unit 21.

The power supply section 24 receives power supplied from an information terminal device such as a personal computer (not shown) via a connector 25, and is necessary for the internal circuits of the card-type wireless communication device 1 to operate. The power supply + B is connected to the switch circuits 33a, 33b, 33c of the first switch means 33.
Through each of the transmission circuit unit 17, the baseband signal processing circuit unit 21, and the interface circuit unit 22.
To the two circuit sections, and further to the amplifiers 13a and 13b via the switch circuits 36a and 36b of the second switch means 36, respectively. Then, the power supply unit 24 directly supplies the power supply + B necessary for the operation of each circuit inside the card-type wireless communication device 1 to each of the other circuits of the card-type wireless communication device 1.

The reception signal level detection means 30 outputs a plurality of different detection signals according to the level of the high frequency signal received from the antenna 11 to the first control means 31 and the second control means 34.

The first switch means 33 supplies power from the power supply section 24 to the three circuit sections of the transmission circuit section 17, the baseband signal processing circuit section 21 and the interface circuit section 22 by switch circuits 33a, 33b and 33c. The supply is turned on and off independently for each of the three circuit units.

The first storage means 32 stores a circuit section for turning on the power and a circuit section for turning off the power among the three circuit sections in correspondence with the plurality of different detection signals.

The first control means 31 controls the first switch means 33 to turn on and off the power of the three circuit units based on the plurality of different detection signals and the contents stored in the first storage means 32. Control.

The second switch means 36 switches the amplifiers 13a, 1 from the power supply section 24 by switch circuits 36a, 36b.
The power supply to 3b is turned on and off independently for each amplifier.

The third switch means 37 is connected to the amplifier 13
The amplifiers 13a and 13b are short-circuited or opened independently for each of a and 13b.

The second storage means 35 stores an amplifier for turning on the power and an amplifier for turning off the power among the amplifiers 13a and 13b in correspondence with the plurality of different detection signals.

The second control means 34 controls the second switch means 36 to turn on and off the power of the amplifiers 13a and 13b based on the plurality of different detection signals and the contents stored in the second storage means 35. Then, the third switch means 37 is controlled so that the powered-on amplifier is opened and the powered-off amplifier is short-circuited.

FIG. 2 is a block circuit diagram showing a schematic configuration of a wireless communication system according to one embodiment of the present invention. The wireless communication system 2 of this embodiment shown in FIG. 2 includes a card-type wireless communication device 3 and an information terminal device 4. The information terminal device 4 is, for example, a personal computer or the like.

The card type wireless communication device 3 of the wireless communication system 2 of the present embodiment has the following circuit configuration. The antenna 11 is connected to the receiving circuit unit 12 and the transmitting circuit unit 17.

The receiving circuit section 12 includes a plurality of amplifiers 13a, 13b, 13c connected in series, a mixer circuit 14, and a demodulation circuit 15, and the antenna 11 includes an amplifier 13a,
13b, 13c, the mixer circuit 14, and the demodulation circuit 15 are connected to the baseband signal processing circuit section 21. The transmission circuit unit 17 includes a modulation circuit 20, a mixer circuit 19, and an amplifier 18. The baseband signal processing circuit unit 21 is connected to the antenna 11 via the modulation circuit 20, the mixer circuit 19, and the amplifier 18. I have. The local oscillator 16 is connected to the mixer circuits 14 and 19.

The baseband signal processing circuit 21
Is connected to the connector 2 via the interface circuit unit 22.
5 and the receiving circuit unit 12 and the transmitting circuit unit 1
7 and the baseband signal processing circuit unit 21, a circuit control unit 23 is connected.

The power supply unit 24 is connected to a main body power supply circuit 26 of the information terminal device 4 to be described later via a connector 25, and via each of the switch circuits 33a, 33b and 33c of the first switch means 33. Connected to each of the three circuit sections of the transmission circuit section 17, the baseband signal processing circuit section 21 and the interface circuit section 22, and further includes the switch circuit 3 of the second switch means 36.
6a and 36b, the amplifiers 13a and 13b
b. And the power supply unit 24
Are the other circuits of the card-type wireless communication device 3 except for the above.
Connected directly.

Each of the amplifiers 13a and 13b is connected to a switch circuit 37a, 3a of the third switch means 37.
7b are connected.

The output of the demodulation circuit 15 is connected to a reception signal level detection means 30. The output of the reception signal level detection means 30 is supplied to the interface circuit section 22, a first control means of the information terminal device 4 described later. 31, is connected to the first switch means 33 via the interface circuit section 22, and is connected to the second circuit means via the interface circuit section 22, the second control means 34 of the information terminal device 4 described later, and the interface circuit section 22. It is connected to the switch means 36 and the third switch means 37.

Then, the radio communication system 2 of the present embodiment
The information terminal device 4 includes a first control means 31, a second control means 34, and a main body power supply circuit 26. The first control means 31 is connected to a first storage means 32, The control means 34 is connected to a second storage means 35.

The main body power supply circuit 26 is connected to the power supply section 24 of the card type wireless communication device 3 via the connector 25.

Next, the operation of the wireless communication system 2 of the present embodiment shown in FIG. 2 will be described. Card type wireless communication device 3
On the receiving side, a spread spectrum signal (for example, a 2.4 GHz band) received from the communication partner side by the antenna 11 is received.
Is amplified by the amplifiers 13a, 13b, 13c and applied to the mixer circuit 14. The received high-frequency signal is demodulated into a baseband signal by a mixer circuit 14 and a demodulation circuit 15, and necessary signal processing is performed by a baseband signal processing circuit 21, and the interface circuit 2
The information is output from the connector 25 to the information terminal device 4 such as a personal computer via the connector 2.

On the transmitting side of the card-type wireless communication device 3, an information terminal device 4 such as a personal computer
The data input signal input through the connector 25 and the interface circuit unit 22 is subjected to necessary signal processing by the baseband signal processing circuit unit 21 and the modulation circuit 20
After being spread-spectrum-spread into a spread-spectrum signal (for example, 2.4 GHz band) by a mixer circuit 19, the signal is amplified by an amplifier 18 and transmitted from an antenna 11 to a communication partner.

The circuit control unit 23 controls the operations of the reception circuit unit 12, the transmission circuit unit 17, and the baseband signal processing circuit unit 21.

The power supply section 24 is connected to the main body power supply circuit 26 of the information terminal device 4 such as a personal computer.
5, a power supply + B necessary for the operation of each circuit inside the card-type wireless communication device 3
Are connected to the switch circuits 33a, 33a of the first switch means 33.
3b and 33c, respectively, to the transmission circuit 17, the baseband signal processing circuit 21 and the interface circuit 22, and to the three circuits, and further to the switch circuits 36a and 36b of the second switch means 36. Are supplied to each of the amplifiers 13a and 13b. Then, the power supply unit 24 directly supplies, to the other circuits of the card-type wireless communication device 3, the power supply + B necessary for the respective circuits inside the card-type wireless communication device 3 to operate.

The reception signal level detection means 30 outputs a plurality of different detection signals according to the level of the high frequency signal received from the antenna 11 via the interface circuit unit 22 to the first control means 31 and the second control means 34. Output to

The first switch means 33 uses switch circuits 33a, 33b and 33c to supply power from the power supply section 24 to the three circuit sections of the transmission circuit section 17, the baseband signal processing circuit section 21 and the interface circuit section 22. The supply is turned on and off independently for each of the three circuit units.

The second switch means 36 uses the switch circuits 36a and 36b to switch the amplifiers 13a and 1a from the power supply unit 24.
The power supply to 3b is turned on and off independently for each amplifier.

The third switch means 37 is connected to the amplifier 13
The amplifiers 13a and 13b are short-circuited or opened independently for each of a and 13b.

The first storage means 32, the first control means 31, the second storage means 35, and the second control means 34 provided in the information terminal device 4 such as a personal computer will be described.

The first storage means 32 stores a circuit section for turning on the power and a circuit section for turning off the power among the three circuit sections in accordance with each of the plurality of different detection signals in the card-type wireless communication device 3. are doing.

The first control means 31 turns on and off the power of the three circuit units based on the plurality of different detection signals in the card type wireless communication device 3 and the contents stored in the first storage means 32. Interface circuit section 22
The first switch means 33 is controlled via.

The second storage means 35 stores an amplifier for turning on the power and an amplifier for turning off the power among the amplifiers 13a and 13b in accordance with each of the plurality of different detection signals in the card-type wireless communication device 3. .

The second control means 34 controls the amplifiers 13 a, 13 a based on the plurality of different detection signals in the card type wireless communication device 3 and the contents stored in the second storage means 35.
b controls the second switch means 36 via the interface circuit unit 22 so as to turn on / off the power supply of the interface circuit b, and opens the power-on amplifier and short-circuits the power-off amplifier. The third switch means 37 is controlled via the section 22.

FIG. 3 is a flowchart for explaining the operation of the card type radio communication apparatus and the first control means of the radio communication system according to one embodiment of the present invention.
FIG. 2 is a diagram illustrating the contents of a first storage unit of the card-type wireless communication device and the wireless communication system according to the embodiment of the present invention.

First, the contents of the first storage means 32 of the card-type wireless communication device 1 and the wireless communication system 2 of this embodiment will be described below with reference to FIG.

The received signal level detecting means 30 outputs a first detected signal, a second detected signal, a third detected signal, and a fourth detected signal in the order of a received signal level from a strong level to a weak level.

In the first storage means 32, in response to the first detection signal, the switch circuit 33a of the first switch means 33 is turned on, the switch circuit 33b is turned on, and the switch circuit 33c is turned on. Data is stored such that the power supplies of the transmission circuit unit 17, the baseband signal processing circuit unit 21, and the interface circuit unit 22 are all turned on.

In response to the second detection signal, the switch circuit 33a of the first switch means 33 is turned off, the switch circuit 33b is turned on, the switch circuit 33c is turned on, and the power supply of the transmission circuit section 17 is turned on. Data is stored such that the power of the baseband signal processing circuit unit 21 and the interface circuit unit 22 is turned off.

In response to the third detection signal, the switch circuit 33a of the first switch means 33 is turned off, the switch circuit 33b is turned off, the switch circuit 33c is turned on, and the transmission circuit section 17 and the baseband Signal processing circuit 2
Data is stored such that the power supply of the interface circuit unit 22 is turned on and the power supply of the interface circuit unit 22 is turned on.

In response to the fourth detection signal, the switch circuit 33a of the first switch means 33 is turned off, the switch circuit 33b is turned off, the switch circuit 33c is turned off, and the transmission circuit section 17, baseband Signal processing circuit section 21
In addition, data is stored such that all power supplies of the interface circuit unit 22 are turned off.

Next, the operation of the first control means 31 of the card type radio communication device 1 and the radio communication system 2 of the present embodiment will be described below with reference to FIG.

The reception signal level detection means 30 outputs a first detection signal, a second detection signal, a third detection signal, and a fourth detection signal in the order of the received signal level from a strong level to a weak level. .

In step S1, a detection signal from the reception signal level detection means 30 is input, and the flow advances to step S2.

In step S2, it is determined whether or not the input detection signal is a first detection signal.
Is detected by the first storage means 32.
After reading the data corresponding to the detection signal, the process proceeds to step S6. If the input detection signal is not the first detection signal, the process proceeds to step S3.

In step S3, it is determined whether or not the input detection signal is a second detection signal.
, The first storage means 32 stores the second detection signal.
After reading the data corresponding to the detection signal, the process proceeds to step S6. If the input detection signal is not the second detection signal, the process proceeds to step S4.

In step S4, it is determined whether or not the input detection signal is a third detection signal.
, The first storage means 32 stores the third detection signal.
After reading the data corresponding to the detection signal, the process proceeds to step S6. If the input detection signal is not the third detection signal, the process proceeds to step S5.

In step S5, since the input detection signal is the fourth detection signal, the first storage means 3
Then, the data corresponding to the fourth detection signal is read out from No. 2 and the process proceeds to step S6.

In step S6, steps 2 to 5
Switch circuits 33a, 33a of the first switch means 33 based on the data read in any one of the steps
After controlling b and 33c, the process returns to step S1.

As described above, when the input detection signal is the first detection signal, the first control means 31 supplies the power to the transmission circuit unit 17, the baseband signal processing circuit unit 21, and the interface circuit unit 22. Are turned on, and when the input detection signal is the second detection signal, the transmission circuit unit 17
Of the baseband signal processing circuit unit 21 and the interface circuit unit 22 are turned on. When the input detection signal is the third detection signal, the transmission circuit unit 17 is turned off.
When the power of the baseband signal processing circuit 21 is turned off and the power of the interface circuit 22 is turned on, and the input detection signal is the fourth detection signal, the transmission circuit 1
7. The switch circuits 33a, 33b, 33c of the first switch means 33 are controlled so that the power supplies of the baseband signal processing circuit section 21 and the interface circuit section 22 are all turned off.

FIG. 4 is a flowchart for explaining the operation of the card type radio communication apparatus and the second control means of the radio communication system according to one embodiment of the present invention.
FIG. 2 is a diagram illustrating the contents of a second storage unit of the card-type wireless communication device and the wireless communication system according to the embodiment of the present invention.

First, the contents of the second storage means 35 of the card type radio communication device 1 and the radio communication system 2 of the present embodiment will be described below with reference to FIG.

The reception signal level detection means 30 outputs the 1a detection signal, the 1b detection signal, and the 1c detection signal in the order of the reception signal level from a high level to a low level.

In the second storage means 35, the switch circuit 36a of the second switch means 36, the switch circuit 36b is turned off, and the switch circuit of the third switch means 37 are stored in accordance with the first detection signal. The data is stored such that the power supply 37a is turned on, the switch circuit 37b is turned on, the amplifier 13a is short-circuited to turn off the power supply, and the amplifier 13b is short-circuited to turn off the power supply.

In response to the 1b detection signal, the switch circuit 36a of the second switch means 36 is turned on, the switch circuit 36b is turned off, the switch circuit 37a of the third switch means 37 is turned off, and the switch circuit 37b is turned off. Is turned on, the amplifier 13a is opened, and the power is turned on.
Is stored so that the power supply is turned off by short-circuiting the power supply.

Further, in response to the first detection signal, the switch circuit 36a of the second switch means 36 is turned on, the switch circuit 36b is turned on, the switch circuit 37a of the third switch means 37 is turned off, and the switch circuit 37b is turned on. Is turned off, the amplifier 13a is opened, and the power is turned on.
Is stored so that the power is turned on by releasing the power.

Next, the operation of the card type radio communication device 1 and the second control means 34 of the radio communication system 2 of the present embodiment will be described below with reference to FIG.

The reception signal level detection means 30 outputs the 1a detection signal, the 1b detection signal, and the 1c detection signal in the order of the reception signal level from a high level to a low level.

In step S1, a detection signal from the reception signal level detection means 30 is input, and the flow advances to step S2.

In step S2, it is determined whether or not the input detection signal is the 1a detection signal. If the detection signal is the 1a detection signal, the second storage means 35 stores the 1a detection signal as the 1a detection signal. After reading the corresponding data, the process proceeds to step S5. If the input detection signal is not the 1a-th detection signal, the process proceeds to step S3.

In step S3, it is determined whether or not the input detection signal is the 1b detection signal. If the detection signal is the 1b detection signal, the second storage means 35 stores the 1b detection signal as the 1st detection signal. After reading the corresponding data, the process proceeds to step S5. If the input detection signal is not the 1b detection signal, the process proceeds to step S4.

In step S4, since the input detection signal is the 1c detection signal, the data corresponding to the 1c detection signal is read from the second storage means 35, and then the flow proceeds to step S5.

In step S5, steps 2 to 4
Switch circuits 36a, 36b of the second switch means 36 based on the data read in any one of the steps
And a switch circuit 37a, 3 of the third switch means 37.
7b, and then returns to step S1.

As described above, when the input detection signal is the first detection signal, the second control means 34 turns off the switch circuit 36a of the second switch means 36, turns off the switch circuit 36b, The switch circuit 37a of the third switch means 37 is turned on, the switch circuit 37b is turned on, the amplifier 13a is short-circuited, and the power is turned off.
Switch means 3 so as to short-circuit and turn off the power.
6 and the third switch means 37 are controlled.

Further, the input detection signal is the first detection signal.
In the case of the b detection signal, the switch circuit 36a of the second switch means 36 is turned on, the switch circuit 36b is turned off, the switch circuit 37a of the third switch means 37 is turned off, the switch circuit 37b is turned on, and the amplifier 13a is opened. Then, the second switch means 36 and the third switch means 37 are controlled so that the power is turned on, the amplifier 13b is short-circuited, and the power is turned off.

Further, the input detection signal is the first detection signal.
In the case of the c detection signal, the switch circuit 36a of the second switch means 36 is turned on, the switch circuit 36b is turned on, the switch circuit 37a of the third switch means 37 is turned off, the switch circuit 37b is turned off, and the amplifier 13a is opened. Then, the second switch means 36 and the third switch means 37 are controlled so that the power is turned on and the amplifier 13b is opened to turn on the power.

In the above-described card-type radio communication device 1 and radio communication system 2, the reception signal level detection unit 30 outputs the reception signal level to the first control unit 31 in the order of high to low levels. A detection signal, a second detection signal, a third detection signal, and a fourth detection signal;
Relation between the detection signal of 1a, the detection signal of 1b, and the detection signal of 1c, which are output from the reception signal level detection means 30 to the second control means 31 in order of the reception signal level from the strong level to the weak level. For example, when the received signal level is within the level range of the first detection signal, the first
It outputs the detection signal a, the detection signal 1b, and the detection signal 1c.

In the above-described card-type wireless communication device 1 and wireless communication system 2, the second switch means 36
Has been described as an example in which two switch circuits 36a and 36b are provided, and the third switch means 37 is provided with two switch circuits 37a and 37b and two amplifiers 13a and 13b are controlled. Not the thing, the second
The switch means 36 and the third switch means 37 may include an arbitrary number of switch circuits, and may control an arbitrary number of amplifiers.

[0098]

As described above, the present invention provides an antenna connected to an information terminal device, a receiving circuit unit for frequency-converting and demodulating a high-frequency signal received from the antenna and outputting a baseband received signal, A transmission circuit unit that modulates and frequency-converts the baseband transmission signal and outputs a high-frequency signal to the antenna; a baseband signal processing circuit unit that performs signal processing on the baseband transmission signal and the baseband reception signal; In a card-type wireless communication device including an interface circuit unit having an interface function between terminal devices, a power supply unit for supplying power to each of the circuit units, and a connector connected to the information terminal device, the card type wireless communication device receives the signal from the antenna. Receiving signal level detecting means for outputting a plurality of different detection signals according to the level of the high-frequency signal; A first switch means for independently turning on / off the power supply from the unit to the three circuit units of the transmission circuit unit, the baseband signal processing circuit unit, and the interface circuit unit for each of the three circuit units; A first storage unit that stores a circuit unit that turns on and a circuit unit that turns off the power among the three circuit units in association with each of the detection signals; and the plurality of different detection signals and the first storage unit. And a first control unit for controlling the first switch unit so as to turn on and off the power of the three circuit units based on the stored contents.

Therefore, according to the present invention, power is supplied from the power supply unit to the three circuit units of the transmission circuit unit, the baseband signal processing circuit unit, and the interface circuit unit according to the level of the high-frequency signal received from the antenna. Is turned on and off independently for each of the three circuit portions,
A card-type wireless communication device with low power consumption can be provided.

Further, according to the present invention, in the above card-type radio communication device, the reception circuit unit includes a plurality of amplifiers connected in series to amplify the received high-frequency signal, and A second switch for turning on / off the power supply to the amplifier independently for each of the amplifiers; a third switch for short-circuiting or opening each of the amplifiers independently for each of the amplifiers; A second memory storing an amplifier for turning on the power and an amplifier for turning off the power among the amplifiers corresponding to the respective detection signals.
And controlling the second switch means to turn on / off the power of each of the amplifiers based on the plurality of different detection signals and the contents stored in the second storage means, and turning on the power. And second control means for controlling the third switch means so as to open the amplifier and short-circuit the powered-off amplifier.

Therefore, according to the present invention, power is supplied from the power supply unit to the three circuit units of the transmission circuit unit, the baseband signal processing circuit unit, and the interface circuit unit according to the level of the high-frequency signal received from the antenna. Is turned on and off independently for each of the three circuit portions,
In addition to reducing power consumption, further, by independently turning on and off the power supply from the power supply unit to each of the amplifiers according to the level of the high-frequency signal received from the antenna, A card-type wireless communication device with low power consumption can be provided.

Further, according to the present invention, in the above card-type radio communication apparatus, the reception signal level detecting means includes a first detection signal, a second detection signal, A third detection signal and a fourth detection signal are output, and the first storage unit stores the transmission circuit unit, the baseband signal processing circuit unit, and the interface circuit unit corresponding to the first detection signal. Are turned on, and in response to the second detection signal, the power supply of the transmission circuit unit is turned off, the power supplies of the baseband signal processing circuit unit and the interface circuit unit are turned on, and the third detection signal In response to the fourth detection signal, the power supply of the transmission circuit unit and the baseband signal processing circuit unit is turned off, and the power supply of the interface circuit unit is turned on. All the power of the baseband signal processing circuit and the interface circuit is characterized in that it is stored to be turned off.

Therefore, according to the present invention, the power of only the transmitting circuit is turned off, and the power of only the transmitting circuit and the baseband signal processing circuit is turned off in the order of the received signal level from the strong level to the weak level. Off, so as to turn off all the power supplies of the transmission circuit section, the baseband signal processing circuit section, and the interface circuit section, by controlling to turn off the power supply of the circuit section having a lower operation priority according to the reception signal level. Further, it is possible to provide a card-type wireless communication device in which the rising speed of the circuit operation when the received signal level shifts from a weak level to a strong level is improved.

Further, according to the present invention, in the above card-type radio communication apparatus, the frequency band of the high-frequency signal transmitted and received from the antenna is in the 2.4 GHz band, and a frequency hopping method using a spread spectrum technique is used. It is characterized by having.

Therefore, according to the present invention, for example,
The power consumption of a card-type wireless communication device equipped with a Bluetooth function, which is a short-range wireless data communication standard, can be reduced.

Further, the present invention provides an information terminal device, an antenna connected to the information terminal device, a receiving circuit for frequency-converting and demodulating a high-frequency signal received from the antenna and outputting a baseband reception signal, A transmission circuit unit that modulates and frequency-converts the input baseband transmission signal and outputs a high-frequency signal to the antenna; a baseband signal processing circuit unit that performs signal processing on the baseband transmission signal and the baseband reception signal; A wireless communication system including a card-type wireless communication device including an interface circuit unit having an interface function between information terminal devices, a power supply unit for supplying power to the respective circuit units, and a connector connected to the information terminal device In the card-type wireless communication device, according to the level of the high-frequency signal received from the antenna Receiving signal level detecting means for outputting a plurality of different detection signals; and supplying power from the power supply unit to the three circuit units of the transmission circuit unit, the baseband signal processing circuit unit, and the interface circuit unit for each of the three circuit units. And a first switch means for turning on and off independently of each other, wherein the information terminal device is configured to turn on and off the power among the three circuit portions in accordance with the plurality of different detection signals, respectively. A first storage unit storing a first unit, and a first switch unit configured to turn on and off a power supply of the three circuit units based on the plurality of different detection signals and contents stored in the first storage unit. And a first control means for controlling.

Therefore, according to the present invention, according to the level of the high-frequency signal received from the antenna, power is supplied from the power supply unit to the three circuit units of the transmission circuit unit, the baseband signal processing circuit unit, and the interface circuit unit. Is turned on and off independently for each of the three circuit portions,
A wireless communication system with low power consumption can be provided.

Furthermore, by providing the first storage means and the first control means on the information terminal device side, the power consumption of the card type radio communication device can be further reduced, and the card type radio communication system can be used. The temperature rise of the communication device can be reduced.

Further, by providing the first storage means and the first control means on the information terminal device side, the number of circuit components on the card type radio communication device side can be reduced, and the card type radio communication device in the radio communication system can be reduced. The size can be reduced.

Further, according to the present invention, in the above wireless communication system, the card-type wireless communication device includes a plurality of amplifiers connected in series to the receiving circuit unit to amplify the received high-frequency signal. Second switch means for independently turning on / off the power supply from the power supply unit to each of the amplifiers, and third switch means for short-circuiting or opening each of the amplifiers independently for each of the amplifiers Wherein the information terminal device stores a second power-on amplifier and a second power-off amplifier corresponding to each of the plurality of different detection signals.
And controlling the second switch means to turn on / off the power of each of the amplifiers based on the plurality of different detection signals and the contents stored in the second storage means, and turning on the power. And second control means for controlling the third switch means so as to open the amplifier and short-circuit the powered-off amplifier.

Therefore, according to the present invention, power is supplied from the power supply unit to the three circuit units of the transmission circuit unit, the baseband signal processing circuit unit, and the interface circuit unit according to the level of the high-frequency signal received from the antenna. Is turned on and off independently for each of the three circuit portions,
In addition to reducing power consumption, further, by independently turning on and off the power supply from the power supply unit to each of the amplifiers according to the level of the high-frequency signal received from the antenna, A wireless communication system with low power consumption can be provided.

Further, by providing first and second storage means and first and second control means on the information terminal device side, the power consumption of the card-type wireless communication device side can be further reduced, and the card-type wireless communication device side can reduce the power consumption. Temperature rise of the portable wireless communication device can be reduced.

Further, by providing the information terminal device with the first and second storage means and the first and second control means, the number of circuit components on the card type wireless communication device side can be reduced.
The size of the card-type wireless communication device in the wireless communication system can be reduced.

Further, according to the present invention, in the above-mentioned radio communication system, the reception signal level detection means includes a first detection signal, a second detection signal, and a third detection signal in order of a reception signal level from a strong level to a weak level. And a fourth detection signal, and the first storage means stores a power supply of the transmission circuit section, the baseband signal processing circuit section, and the interface circuit section corresponding to the first detection signal. Are turned on, and the power of the transmitting circuit unit is turned off, and the powers of the baseband signal processing circuit unit and the interface circuit unit are turned on in response to the second detection signal. Then, the power supply of the transmission circuit unit and the baseband signal processing circuit unit is turned off, the power supply of the interface circuit unit is turned on, and the transmission circuit unit and the base unit are turned on in response to the fourth detection signal. All the power of the command signal processing circuit and the interface circuit is characterized in that it is stored to be turned off.

Therefore, according to the present invention, the power of only the transmitting circuit is turned off, and the power of only the transmitting circuit and the baseband signal processing circuit is turned off in the order of the received signal level from the strong level to the weak level. Off, so as to turn off all the power supplies of the transmission circuit section, the baseband signal processing circuit section, and the interface circuit section, by controlling to turn off the power supply of the circuit section having a lower operation priority according to the reception signal level. In addition, it is possible to provide a wireless communication system in which the circuit operation rising speed is improved when the received signal level shifts from a weak level to a strong level.

Further, according to the present invention, in the above radio communication system, a frequency band of a high frequency signal transmitted and received from the antenna is a 2.4 GHz band, and a frequency hopping method using a spread spectrum technique is used. Therefore, according to the present invention, for example, low power consumption of a wireless communication system equipped with a Bluetooth function, which is a short-range wireless data communication standard, can be achieved.

[Brief description of the drawings]

FIG. 1 is a block circuit diagram showing a schematic configuration of a card-type wireless communication device according to an embodiment of the present invention.

FIG. 2 is a block circuit diagram showing a schematic configuration of a wireless communication system according to one embodiment of the present invention.

FIG. 3 is a flowchart illustrating an operation of a card-type wireless communication device and a first control unit of the wireless communication system according to the embodiment of the present invention.

FIG. 4 is a flowchart illustrating an operation of a card-type wireless communication device and a second control unit of the wireless communication system according to the embodiment of the present invention.

FIG. 5 is a diagram illustrating the contents of a first storage unit of the card-type wireless communication device and the wireless communication system according to the embodiment of the present invention.

FIG. 6 is a diagram illustrating the contents of a card-type wireless communication device and a second storage unit of the wireless communication system according to one embodiment of the present invention.

FIG. 7 is a block circuit diagram showing a schematic configuration of a conventional card-type wireless communication device.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 card-type wireless communication device 2 wireless communication system 3 card-type wireless communication device 4 information terminal device 11 antenna 12 receiving circuit unit 13a, 13b, 13c amplifier 14 mixer circuit 15 demodulation circuit 16 local oscillator 17 transmission circuit unit 18 amplifier 19 mixer circuit Reference Signs List 20 modulation circuit 21 baseband signal processing circuit section 22 interface circuit section 23 circuit control section 24 power supply section 25 connector 26 main body power supply circuit 30 reception signal level detection means 31 first control means 32 first storage means 33 first switch Means 33a, 33b, 33c Switch circuit 34 Second control means 35 Second storage means 36 Second switch means 36a, 36b Switch circuit 37 Third switch means 37a, 37b Switch circuit

 ──────────────────────────────────────────────────続 き Continued on the front page F term (reference) 5K011 BA04 BA10 DA02 DA12 DA26 DA29 EA03 FA07 JA01 JA12 KA03 5K022 EE04 EE31 5K060 DD04 EE05 FF07 HH06 HH31 HH39 LL01 LL25 5K061 AA02 BB12 CC45 EE01 JJ06 JJ07

Claims (8)

[Claims] An antenna connected to an information terminal device,
A receiving circuit unit for frequency-converting and demodulating a high-frequency signal received from the antenna and outputting a baseband reception signal;
A transmission circuit unit that modulates and frequency-converts the input baseband transmission signal and outputs a high-frequency signal to the antenna,
A baseband signal processing circuit unit that performs signal processing of the baseband transmission signal and the baseband reception signal, an interface circuit unit having an interface function between the information terminal devices, and a power supply unit that supplies power to the circuit units. A card-type wireless communication device comprising a connector connected to the information terminal device; a reception signal level detection unit that outputs a plurality of different detection signals according to a level of a high-frequency signal received from the antenna; First switch means for independently turning on / off the power supply to three circuit units of the transmission circuit unit, the baseband signal processing circuit unit, and the interface circuit unit for each of the three circuit units; A circuit part for turning on the power and a circuit part for turning off the power among the three circuit parts corresponding to the respective signals; The first that memorized
And first control for controlling the first switch so as to turn on and off the power of the three circuit units based on the plurality of different detection signals and the contents stored in the first storage. And a card-type wireless communication device. 2. The receiving circuit section includes a plurality of amplifiers connected in series to amplify the received high-frequency signal, and independently supplies power from the power supply section to each of the amplifiers for each of the amplifiers. A second switch means for turning on and off, and a third switch means for short-circuiting or opening each of the amplifiers independently for each of the amplifiers. A second memory storing an amplifier to be turned on and an amplifier to be turned off
And controlling the second switch means to turn on / off the power of each of the amplifiers based on the plurality of different detection signals and the contents stored in the second storage means, and turning on the power. 2. The card-type wireless communication device according to claim 1, further comprising: second control means for controlling the third switch means so as to open the amplifier and short-circuit the powered-off amplifier. . 3. The reception signal level detection means outputs a first detection signal, a second detection signal, a third detection signal, and a fourth detection signal in order of a received signal level from a strong level to a weak level. In the first storage unit, the power supply of the transmission circuit unit, the baseband signal processing circuit unit, and the interface circuit unit is all turned on in response to the first detection signal, and the second detection signal In response to the above, the power supply of the transmission circuit unit is turned off, the power supply of the baseband signal processing circuit unit and the interface circuit unit is turned on, and the transmission circuit unit and the baseband signal corresponding to the third detection signal. The power of the processing circuit unit is turned off, the power of the interface circuit unit is turned on, and the transmission circuit unit, the baseband signal processing circuit unit, and the interface circuit unit are turned on in response to the fourth detection signal. 3. The card-type wireless communication device according to claim 1, wherein the power supply is stored so as to turn off all power supplies. 4. The card-type wireless communication device according to claim 1, wherein a frequency band of a high-frequency signal transmitted and received from the antenna is 2.4.
The card-type wireless communication device according to any one of claims 1 to 3, wherein the frequency band is in a GHz band and a frequency hopping method using a spread spectrum technique is used. 5. An information terminal device, an antenna connected to the information terminal device, a receiving circuit unit for frequency-converting and demodulating a high-frequency signal received from the antenna and outputting a baseband reception signal, and an input base unit. A transmission circuit unit that modulates and frequency-converts a band transmission signal and outputs a high-frequency signal to the antenna; a baseband signal processing circuit unit that performs signal processing on the baseband transmission signal and the baseband reception signal; A wireless communication system comprising: a card-type wireless communication device including an interface circuit unit having an interface function of (i), a power supply unit for supplying power to each of the circuit units, and a connector connected to the information terminal device; Wireless communication device, a plurality of different according to the level of the high-frequency signal received from the antenna The received signal level detecting means for outputting a signal output, the transmitting circuit section from the power supply unit, the power supply to the three circuits of the baseband signal processing circuit and the interface circuit 3
A first switch unit that is turned on and off independently for each of the three circuit units, wherein the information terminal device is configured to turn on a power source among the three circuit units in accordance with each of the plurality of different detection signals; and A first storage unit that stores a circuit unit to be turned off, and a first storage unit that turns on and off the power of the three circuit units based on the plurality of different detection signals and the content stored in the first storage unit. Control of the switch means of the first
A wireless communication system comprising: 6. The card-type wireless communication device, wherein the receiving circuit unit includes a plurality of amplifiers connected in series to amplify the received high-frequency signal, and power is supplied from the power supply unit to each of the amplifiers. A second switch means for turning on and off independently for each of the amplifiers, and a third switch means for short-circuiting or opening each of the amplifiers independently for each of the amplifiers. A second storage unit that stores an amplifier to be turned on and an amplifier to be turned off among the amplifiers corresponding to a plurality of different detection signals;
Based on the plurality of different detection signals and the contents stored in the second storage unit, the second switch unit is controlled so as to turn on and off the power supply of each of the amplifiers, and the powered-on amplifier is opened. 6. The wireless communication system according to claim 5, further comprising: a second control unit that controls the third switch unit so as to short-circuit the power-off amplifier. 7. The reception signal level detection means outputs a first detection signal, a second detection signal, a third detection signal, and a fourth detection signal in order of a received signal level from a strong level to a weak level. In the first storage unit, the power supply of the transmission circuit unit, the baseband signal processing circuit unit, and the interface circuit unit is all turned on in response to the first detection signal, and the second detection signal In response to the above, the power supply of the transmission circuit unit is turned off, the power supply of the baseband signal processing circuit unit and the interface circuit unit is turned on, and the transmission circuit unit and the baseband signal corresponding to the third detection signal. The power of the processing circuit unit is turned off, the power of the interface circuit unit is turned on, and the transmission circuit unit, the baseband signal processing circuit unit, and the interface circuit unit are turned on in response to the fourth detection signal. The wireless communication system according to claim 5, wherein the power is stored so as to turn off all power. 8. The wireless communication system, wherein a frequency band of a high-frequency signal transmitted and received from the antenna is 2.4 GHz.
6. A frequency band hopping method using a spread spectrum technique in the z band.
The wireless communication system according to any one of claims 1 to 7.